紧急消息是今晚用无线电传送给我们的。

An urgent message was radioed to us this evening.

youdao

用于无线电传输时，信号用载波传送，通过改变(调制)载波的振幅、频率或间隔来实现。

FOR radio transmission, inFORmation is imparted to a carrier wave by varying (modulating) its amplitude, frequency, or duration.

youdao

用于无线电传输时，信号用载波传送，通过改变(调制)载波的振幅、频率或间隔来实现。

FOR radio transmission, inFORmation is imparted to a carrier wave by varying (modulating) its amplitude, frequency, or duration.

youdao